(TRAMPOLINE_SIZE): Install real implementation.

(INITIALIZE_TRAMPOLINE, TRAMPOLINE_TEMPLATE): Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@8356 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/config/pdp11/pdp11.h b/gcc/config/pdp11/pdp11.h
index 4ae4203..b0cab19 100644 (file)
--- a/gcc/config/pdp11/pdp11.h
+++ b/gcc/config/pdp11/pdp11.h
@@ -1242,19 +1242,38 @@ fprintf (FILE, "$help$: . = .+8 ; space for tmp moves!\n")      \
 
 #define ASM_OUTPUT_DOUBLE_INT(a,b)     fprintf(a,"%d", b)
 
-/* trampoline - how should i do it in separate i+d ? */
-#define TRAMPOLINE_SIZE 0
+/* trampoline - how should i do it in separate i+d ? 
+   have some allocate_trampoline magic??? 
 
-#define INITIALIZE_TRAMPOLINE(x,y,z)   \
+   the following should work for shared I/D: */
+
+/* lets see whether this works as trampoline:
+MV     #STATIC, $4     0x940Y  0x0000 <- STATIC; Y = STATIC_CHAIN_REGNUM
+JMP    FUNCTION        0x0058  0x0000 <- FUNCTION
+*/
+
+#define TRAMPOLINE_TEMPLATE(FILE)      \
 {                                      \
-abort();                               \
+  ASM_OUTPUT_INT (FILE, gen_rtx(CONST_INT, VOIDmode, 0x9400+STATIC_CHAIN_REGNUM)); \
+  ASM_OUTPUT_INT (FILE, const0_rtx);                           \
+  ASM_OUTPUT_INT (FILE, gen_rtx(CONST_INT, VOIDmode, 0x0058)); \
+  ASM_OUTPUT_INT (FILE, const0_rtx);                           \
 }
 
-#define TRAMPOLINE_TEMPLATE(FILE)      \
+#define TRAMPOLINE_SIZE 8
+#define TRAMPOLINE_ALIGN 16
+
+/* Emit RTL insns to initialize the variable parts of a trampoline.
+   FNADDR is an RTX for the address of the function's pure code.
+   CXT is an RTX for the static chain value for the function.  */
+
+#define INITIALIZE_TRAMPOLINE(TRAMP,FNADDR,CXT)        \
 {                                      \
-abort();                               \
+  emit_move_insn (gen_rtx (MEM, HImode, plus_constant (TRAMP, 2)), CXT); \
+  emit_move_insn (gen_rtx (MEM, HImode, plus_constant (TRAMP, 6)), FNADDR); \
 }
 
+
 /* Some machines may desire to change what optimizations are
    performed for various optimization levels.   This macro, if
    defined, is executed once just after the optimization level is